I believe you have a better chance of buying a nice ERA by selling your upgraded G35 sedan outright and applying the proceeds towards an ERA. The trade option sort of limits your choices if not completely. The challenge is G35 sedans are a dime a dozen, even with nice wheels, wholesale dealer market too... and especially now with the AWD version out. Nice cars, I like them alot, and they drive nice. Maybe even a tad bit under rated in my book. Obtaining a nice used ERA that does not require either an engine / trans / or differential refresh will cost you quite a bit more than $10k extra even above an upgraded G35. A G35 + a nice Cobra make a nice package if you decide to keep the Infinity. Good luck, ya never know who/what might turn up.
